<template>

  <div class = "sidebar-logo-container" :class = "{collapse: collapse}">
    <transition name = "sidebarLogoFade">
      <!-- sidebar收起状态下 -->
      <router-link
          v-if = "collapse"
          key = "collapse"
          to = "/"
          class = "sidebar-logo-link"
      >
        <img
            v-if = "logo"
            :src = "logo"
            class = "sidebar-logo"
            :alt = title
        >

        <h1
            v-else
            class = "sidebar-title"
        >{{ title }}</h1>
      </router-link>
      <router-link
          v-else
          key = "expand"
          to = "/"
          class = "sidebar-logo-link"
      >
        <img
            v-if = "logo"
            :src = "logo"
            class = "sidebar-logo"
            :alt = title
        >

        <h1 class = "sidebar-title">{{ title }}</h1>

      </router-link>

    </transition>

  </div>

</template>

<script lang = "ts">
import { defineComponent } from 'vue'

export default defineComponent({
  name: 'Logo',
  props: {
    collapse: { type: Boolean, required: true }
  },
  setup() {
    return {
      title: 'viewer-design-admin',
      logo: require('@/assets/logo.png')
    }
  }
})
</script>

<style lang = "scss" scoped>
.sidebar-logo-container {
  width: 100%;
  height: 50px;
  line-height: 50px;
  text-align: center;
  background: #2b2f3a;
  overflow: hidden;

  .sidebar-logo-link {
    display: block;
    width: 100%;
    height: 100%;

    .sidebar-logo {

      width: 32px;
      height: 32px;
      vertical-align: middle;
      margin-right: 12px;
    }

    .sidebar-title {
      display: inline-block;
      color: #fff;
      margin: 0;
      font-weight: 600;
      line-height: 50px;
      font-size: 14px;
      font-family: Avenir, Helvetica Neue, Arial, Helvetica, sans-serif;
      vertical-align: middle;
    }
  }

  &.collapse {
    .sidebar-logo {
      margin-right: 0;
    }
  }
}

.sidebarLogoFade-enter-active {
  transition: opacity 1.5s;
}


.sidebarLogoFade-enter-from,
.sidebarLogoFade-leave-to {
  opacity: 0;
}
</style>
